Based on the options given, the most likely answer to this query is
A. Some animals exhibit similar stages in embryonic development. Embryonic development is where a fertilized egg undergoes similar development with other animals.
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They're celled subsistence farmers, their farming practice is subsistence farming, where most of the product they grew or reared are for themselves and their families, they usually don't take the products to the markets for commercial purposes, instead those who do that are practising commercial farming.
the predominant pollutants include nitrogen oxides, particularly nitric oxide (NO) and nitrogen dioxide (NO2), and volatile organic compounds.
Gather all the information that you know about enzymes and and explain in a few sentences how the student probably measured the polyphenol oxidase activity :) hope this helped
Sex cells only contain one chromosome from each pair. When an egg cell and spermcell join together, the fertilised egg cell contains 23 pairs of chromosomes..
I am 99% sure that is the answer.